From: Tejun Heo Date: Fri, 17 Jul 2009 02:58:33 +0000 (+0900) Subject: libata: clear eh_info on reset completion X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1e641060c4b564e820abdb6a4c7a603a0d386250;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git libata: clear eh_info on reset completion Resets are done with port frozen but some controllers still issue interrupts during reset and they may end up recording error conditions in ehi leading to unnecessary EH retrials. This patch makes ata_eh_reset() clear ehi on reset completion. As reset is the most severe recovery action, there's nothing to lose by clearing ehi on its completion. Signed-off-by: Tejun Heo Reported-by: Zdenek Kaspar Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 9159abe5211c..2c34de841e11 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2576,11 +2576,17 @@ int ata_eh_reset(struct ata_link *link, int classify, postreset(slave, classes); } - /* clear cached SError */ + /* + * Some controllers can't be frozen very well and may set + * spuruious error conditions during reset. Clear accumulated + * error information. As reset is the final recovery action, + * nothing is lost by doing this. + */ spin_lock_irqsave(link->ap->lock, flags); - link->eh_info.serror = 0; + memset(&link->eh_info, 0, sizeof(link->eh_info)); if (slave) - slave->eh_info.serror = 0; + memset(&slave->eh_info, 0, sizeof(link->eh_info)); + ap->pflags &= ~ATA_PFLAG_EH_PENDING; spin_unlock_irqrestore(link->ap->lock, flags); /* Make sure onlineness and classification result correspond.